Cable clamp having a base with a tapered hole and a sleeve with a tapered outer wall to clamp a cable in-between

Abstract

A clamp includes a main shaft, a clamping sleeve, an elastic element, and a securing cap. The main shaft includes a base portion and a guide bar. The base portion includes a first end surface, and a second end surface. The base portion defines a first receiving hole in the second end surface. The guide bar extends from the base portion. The clamping sleeve is arranged around the guide bar, and includes an outer sidewall for allowing a cable to wind. The elastic element is arranged around the guide bar. The securing cap is threadedly engaged with the guide bar, and the securing cap configured for rotatably operated to press the elastic element toward the clamping sleeve, such that the elastic element pushes the clamping sleeve against the base portion to clamp the cable between the outer sidewall and an inner sidewall of the base portion.

1. A clamp comprising:
 a main shaft comprising:
 a base portion comprising a first end surface and a second end surface at opposite ends thereof, the base portion defining a first receiving hole, the first receiving hole tapering from the second end surface toward the first end surface, and 
 a guide bar extending from an inner sidewall of the base portion in the first receiving hole away from the first end surface; 
 
 a clamping sleeve arranged around the guide bar, the clamping sleeve comprising an outer sidewall tapering away from the first end surface, the outer sidewall being configured for allowing a cable to wind; 
 an elastic element arranged around the guide bar; and 
 a securing cap threadedly coupled to the guide bar, the securing cap configured for being rotatably operated to press the elastic element toward the clamping sleeve, such that the elastic element pushes the clamping sleeve against the base portion to clamp the cable between the outer sidewall of the clamping sleeve and the inner sidewall of the base portion. 
 
     
     
       2. The clamp of  claim 1 , wherein the clamping sleeve has a generally frusto-conical shape. 
     
     
       3. The clamp of  claim 2 , wherein the base portion has a generally frusto-conical shape, and the base portion tapers from the second end surface toward the first end surface. 
     
     
       4. The clamp of  claim 1 , wherein the clamping sleeve has a plurality of concentric circular slots defined in the outer sidewall of the base portion. 
     
     
       5. The clamp of  claim 4 , wherein the circular slots are spaced from one another and located between the second end surface and the first end surface. 
     
     
       6. The clamp of  claim 5 , wherein a depth of each circular slot decreases with distance of the circular slots relative to the first end surface increasing. 
     
     
       7. The clamp of  claim 6 , wherein each of the circular slots is curved. 
     
     
       8. The clamp of  claim 7 , wherein a radius of each circular slot decreases with distance of the circular slots relative to the first end surface increasing. 
     
     
       9. The clamp of  claim 1 , wherein the clamping sleeve defines a second receiving hole, the guide bar of the main shaft extends through the second receiving hole, the elastic element is located between the securing cap and an inner surface of the clamping sleeve in the second receiving hole. 
     
     
       10. The clamp of  claim 9 , wherein the clamping sleeve comprises a third end surface and a fourth end surface at opposite ends thereof, the outer sidewall connects to the third end surface and the fourth end surface, the third end surface is adjacent to the first end surface, the second receiving hole is generally frusto-conical, the second receiving hole tapers from the fourth end surface toward the third end surface, a minimal diameter of the second receiving hole is equal to a diameter of the guide bar. 
     
     
       11. The clamp of  claim 1 , wherein the main shaft further comprises a conducting bar, the conducting bar extends from the first end surface away from the second end surface, and the conducting bar comprises a first conductive surface and a second conductive surface at opposite sides thereof. 
     
     
       12. The clamp of  claim 1 , wherein each of the main shaft and the clamping sleeve is made of copper.